title: Urine for plasmonic nanoparticle-based colorimetric detection of mercury ion.
abstract: Urine for diagnostics: Urine, a "green" natural product, is used as an active component to produce a simple, inexpensive, and portable colorimetric Hg(2+) sensing assay with high selectivity and sensitivity by simply mixing gold nanoparticles (AuNPs) and urine. The synergetic effect of uric acid and creatinine decorated on AuNPs is the reason for selective binding of Hg(2+) , leading to the aggregation of gold nanoparticles and thereby causing a visible color change.
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Du
authors.forename: Bowen
authors.initials: B
authors.lastname: Zhu
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Chen
mesh_terms: D000042:Absorption; D003124:Colorimetry / Q000379:methods*; D003404:Creatinine / Q000737:chemistry; D006046:Gold / Q000737:chemistry; D055772:Green Chemistry Technology; D006801:Humans; D007477:Ions; D008628:Mercury / Q000032:analysis / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D013053:Spectrophotometry; D055672:Static Electricity; D014527:Uric Acid / Q000737:chemistry; D016482:Urinalysis / Q000379:methods*
chemical_list: D007477:Ions; D014527:Uric Acid; D006046:Gold; D003404:Creatinine; D008628:Mercury
keywords: Hg2+ detection; colorimetry; plasmonic nanoparticles; urine